Hidden treasure: Karen finds a letter in an old book at her grandparent's house. A riddle in the letter takes Karen and her brother Toby on an exciting hunt for treasure from the past. Looking at letters: Throughout history, people have written letters for a variety of purposes. This text examines different kinds of letters and gives infomation about the development of the postal service.

Includes glossary and index. Two different volumes bound as one, comprises thematically paired titles - one fiction and one non-fiction.

Looking at letters / John Lockyer.